期刊
PHYSICAL REVIEW E
卷 88, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.88.051002
关键词
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资金
- Agence Nationale de la Recherche through the grant ANR ProCoMedia Project [ANR-10-INTB-0914]
- Agence Nationale de la Recherche through the grant ANR Dynamonde Project [ANR-12-BS09-0027-01]
We demonstrate by quantitative experimental measurements that metamaterials with anisotropic properties can be used in the context of water waves to produce a reflectionless bent waveguide. The anisotropic medium consists in a bathymetry with subwavelength layered structure that shifts the wave in the direction of the waveguide bending (10 degrees, 20 degrees, and 30 degrees). The waveguide filled with such metamaterial is tested experimentally and compared to a reference empty bent waveguide. The experimental method used to characterize the wave field allows for space-time resolved measurements of water elevation. Results show the efficiency of the shifter. Modal treatment of the experimental data confirms that the metamaterial prevents higher modes from being excited in the waveguide.
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